blue whale definition
blue whale. (Balaenoptera musculus) means any whale known as blue whale, Sibbald’s rorqual, or sulphur bottom, and including pygmy blue whale.
blue whale means any whale known by the name of blue whale, Sibbald's rorqual or sulphur bottom;
blue whale means any whale known by the name of blue whale, Sib- bald’s rorqual, or sulphur bottom.